Question
A man observes that when he has walked metres up an incline, the angular depression of an object in a horizontal plane through the foot of the slope is , and that when he has walked a further distance of metres the depression is .then the inclination of the slope to the horizon is the angle whose cotangent is
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Question Text | A man observes that when he has walked metres up an incline, the angular depression of an object in a horizontal plane through the foot of the slope is , and that when he has walked a further distance of metres the depression is .then the inclination of the slope to the horizon is the angle whose cotangent is . |